Duncraig

I'm trying to ad a new fob on my 2004 TF. I get as far as test horn which works properly. Next stage is the LOCK/UNLOCK button presses but even after at least 20 cycles of this the horn doesn't sound, I can hear a relay clicking in the centre console though. Am I missing something ? I pause between presses and do it nice and slowly but the horn never sounds. If I exit that stage and do the Horn Test button the horn sounds right away. Car VIN is SARRDMBEB4D634561. Also the EKA doesn't work as the alarm is triggered after the first session of key turns. I read it with PSCAN then pressed the Write EKA code to refresh memory, would changing the EKA code help?.